Identifying Vegetation Dynamics and Sensitivities in Response to Water Resources Management in the Heihe River Basin in China
The Heihe River Basin, the second largest inland river basin in China, plays a vital role in the ecological sustainability of the Hexi Corridor. However, the requirements for regional economic development and ecological balance cannot be fully met due to water resource shortage and overexploitation...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2015/861928 |
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| author | Dongqin Yin Xiang Li Yuefei Huang Yuan Si Rui Bai |
| author_facet | Dongqin Yin Xiang Li Yuefei Huang Yuan Si Rui Bai |
| author_sort | Dongqin Yin |
| collection | DOAJ |
| description | The Heihe River Basin, the second largest inland river basin in China, plays a vital role in the ecological sustainability of the Hexi Corridor. However, the requirements for regional economic development and ecological balance cannot be fully met due to water resource shortage and overexploitation induced by an extremely dry climate and population growth, especially in the middle and lower basins. Thus, environmental conservation projects that reallocate water resources have been planned and implemented step by step since 2001. The aim of this study is to evaluate ecosystem restoration benefits by identifying vegetation dynamics and sensitivities. The MODIS Normalized Difference Vegetation Index (NDVI) and its derivative indices, coupled with Geographic Information System (GIS), are introduced to explore ecosystem evolution at the pixel level, based on the hydrological and meteorological data in the whole region at varying temporal and spatial scales. Results indicate there are slight vegetation restoration trends in the upper, middle, and lower basin; the results of correlation analyses between vegetation and runoff into the lower basin suggest that the impact of a water supplement lasts at most three years, and engineering or nonengineering measures should be maintained for permanent ecosystem recovery. |
| format | Article |
| id | doaj-art-ad4538fe96e74956b31fde6e513dafda |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-ad4538fe96e74956b31fde6e513dafda2025-02-03T05:54:31ZengWileyAdvances in Meteorology1687-93091687-93172015-01-01201510.1155/2015/861928861928Identifying Vegetation Dynamics and Sensitivities in Response to Water Resources Management in the Heihe River Basin in ChinaDongqin Yin0Xiang Li1Yuefei Huang2Yuan Si3Rui Bai4State Key Laboratory of Hydro-Science & Engineering, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaState Key Laboratory of Hydro-Science & Engineering, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Hydro-Science & Engineering, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Hydro-Science & Engineering, Tsinghua University, Beijing 100084, ChinaThe Heihe River Basin, the second largest inland river basin in China, plays a vital role in the ecological sustainability of the Hexi Corridor. However, the requirements for regional economic development and ecological balance cannot be fully met due to water resource shortage and overexploitation induced by an extremely dry climate and population growth, especially in the middle and lower basins. Thus, environmental conservation projects that reallocate water resources have been planned and implemented step by step since 2001. The aim of this study is to evaluate ecosystem restoration benefits by identifying vegetation dynamics and sensitivities. The MODIS Normalized Difference Vegetation Index (NDVI) and its derivative indices, coupled with Geographic Information System (GIS), are introduced to explore ecosystem evolution at the pixel level, based on the hydrological and meteorological data in the whole region at varying temporal and spatial scales. Results indicate there are slight vegetation restoration trends in the upper, middle, and lower basin; the results of correlation analyses between vegetation and runoff into the lower basin suggest that the impact of a water supplement lasts at most three years, and engineering or nonengineering measures should be maintained for permanent ecosystem recovery.http://dx.doi.org/10.1155/2015/861928 |
| spellingShingle | Dongqin Yin Xiang Li Yuefei Huang Yuan Si Rui Bai Identifying Vegetation Dynamics and Sensitivities in Response to Water Resources Management in the Heihe River Basin in China Advances in Meteorology |
| title | Identifying Vegetation Dynamics and Sensitivities in Response to Water Resources Management in the Heihe River Basin in China |
| title_full | Identifying Vegetation Dynamics and Sensitivities in Response to Water Resources Management in the Heihe River Basin in China |
| title_fullStr | Identifying Vegetation Dynamics and Sensitivities in Response to Water Resources Management in the Heihe River Basin in China |
| title_full_unstemmed | Identifying Vegetation Dynamics and Sensitivities in Response to Water Resources Management in the Heihe River Basin in China |
| title_short | Identifying Vegetation Dynamics and Sensitivities in Response to Water Resources Management in the Heihe River Basin in China |
| title_sort | identifying vegetation dynamics and sensitivities in response to water resources management in the heihe river basin in china |
| url | http://dx.doi.org/10.1155/2015/861928 |
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